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Regenerating method of cleaning waste liquor of hydrocarbon cleaner

A technology of a hydrocarbon cleaning agent and a treatment method, which is applied in the field of chemical engineering, can solve the problems of regeneration and purification of waste liquid without hydrocarbon cleaning agent, pollution of soil, rivers, lakes and seas or air, soil and air pollution, etc., and achieves low price. , considerable economic benefits, good cleaning performance

Inactive Publication Date: 2013-03-20
DALIAN DONGTAI INDAL WASTE TREATMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the main treatment methods for cleaning waste liquid with hydrocarbon cleaning agents are: ①Pour it directly or pour it into the sewer pipeline into rivers, lakes and seas. Because it contains a large amount of industrial waste oil and dust, it is easy to cause groundwater, soil, rivers, lakes and seas or Air pollution; ② burn it as an auxiliary fuel, this treatment method has low economic value, and produces incineration slag, which is easy to pollute the soil, air, etc.
[0003] So far, there is no report on the regeneration and purification of hydrocarbon cleaning agent cleaning waste liquid

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1 (laboratory scale)

[0018] Take 2 liters of hydrocarbon cleaning agent cleaning waste liquid (waste liquid obtained from stamping oil and anti-rust oil produced in the process of cleaning parts) into a beaker, and then slowly pour 300 ml of 98% Industrial concentrated sulfuric acid, fully stirred for 25 minutes. During the stirring process, it was found that the hydrocarbon cleaning agent cleaning waste liquid gradually became a colorless transparent liquid from the original light yellow turbid liquid with the pouring and stirring of concentrated sulfuric acid, floating on the upper layer of the beaker; Sepia, sinks to the bottom of the beaker. Stand for stratification for 2.5 hours, take the supernatant and pour it into a laboratory distiller, heat and distill at a temperature of 180 degrees to obtain 1.8 liters of distillate products.

[0019] Use this product and the hydrocarbon cleaning agent to clean 100 pieces of oily electronic accessories respect...

Embodiment 2

[0020] Embodiment 2 (industrial production scale)

[0021] (1) Remove most of the waste oil and other impurities dissolved in the cleaning waste liquid by acidification and liquid separation: add oily waste hydrocarbon cleaning agent to the enamel kettle with stirring and liquid level gauge (the cleaning parts are in the 98% industrial concentrated sulfuric acid is slowly added under slow stirring, and the amount of acid added is 20% of the mass of the waste liquid. After adding the acid, fully stir for 30 minutes to fully mix the concentrated sulfuric acid and the oil-containing waste hydrocarbon cleaning agent, and then stand and separate for 2 hours. Most of the grease, water and other impurities in the waste hydrocarbon cleaning agent have been separated from the waste liquid and dissolved in the concentrated sulfuric acid. Since the concentrated sulfuric acid containing oil has a density of about 1.6-1.8kg / L, it is located in the lower layer, and the deoiled The cleaning...

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Abstract

The invention provides a regenerating method of cleaning waste liquor of a hydrocarbon cleaner, and in particular relates to a method for purifying a hydrocarbon cleaner from hydrocarbon cleaner cleaning waste liquor. The method is characterized by comprising the steps of: 1, adding the hydrocarbon cleaner cleaning waste liquor in a container, slowly adding industrial sulphuric acid of 98 percent, fully stirring for 20-30min, standing for 2-3h, and layering due to different densities; 2, extracting supernatant as a basic material, feeding to an organic distillation device, recycling the purified hydrocarbon cleaner by negative pressure distillation, and incinerating residues in the distillation kettle; and 3, separating waste acid containing grease, dust and water at the lower layer, and mixing into the wastewater for treating. The regenerating method is used for regenerating cleaning waste liquor, has a considerable economic benefit, is capable of reducing environment pollution, and accords with the environmental protection idea. The recycled and regenerated hydrocarbon cleaner is satisfied in test and plant using effects, and can completely replace a hydrocarbon cleaner product for use.

Description

technical field [0001] The invention belongs to the technical field of chemical engineering, and in particular relates to a regeneration treatment method for cleaning waste liquid with a hydrocarbon cleaning agent. Background technique [0002] At present, the treatment methods of hydrocarbon cleaning agent cleaning waste liquid are mainly as follows: ① Dump it directly or pour it into the sewer pipeline into rivers, lakes and seas. Because it contains a large amount of industrial waste oil and dust, it is easy to cause groundwater, soil, rivers, lakes and seas or Air pollution; ② burn it as an auxiliary fuel, the economic value of this treatment method is low, and it will produce incineration slag, which is easy to pollute the soil and air. [0003] So far, there is no relevant report on the regeneration and purification of hydrocarbon cleaning agent cleaning waste liquid. Contents of the invention [0004] The object of the present invention is to provide a method for r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11D11/00C10G53/10C11D7/24
Inventor 迟振新李俊冯春燕刘晶李新磊盖世男高麒麟蔡钊荣刘佳丽张晓琳姚晓琳
Owner DALIAN DONGTAI INDAL WASTE TREATMENT
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